Linear dichroic properties of polyethylene films containing a dispersion of terthiophene-based chromophore molecules are investigated by using a scanning near-field optical microscope (SNOM). The polarization-modulation technique implemented in our SNOM provides quantitative information on the dichroic ratio of the samples with sub-wavelength space resolution. Optically active domains are identified and their morphology is analysed as a function of the film fabrication parameters, e.g., the drawing ratio and the kind of dispersed chromophore mixture. These investigations complement conventional polarimetry analysis by adding nanometre-scale information on the spatial distribution of the chromophore molecules and their mutual alignment with the host polymer chains.

Near-field optical microscopy of polymer-based films with dispersed terthiophene chromophores for polarizer applications

PARDI, LUCIO;FUSO, FRANCESCO;ALLEGRINI, MARIA;PUCCI, ANDREA;RUGGERI, GIACOMO
2004

Abstract

Linear dichroic properties of polyethylene films containing a dispersion of terthiophene-based chromophore molecules are investigated by using a scanning near-field optical microscope (SNOM). The polarization-modulation technique implemented in our SNOM provides quantitative information on the dichroic ratio of the samples with sub-wavelength space resolution. Optically active domains are identified and their morphology is analysed as a function of the film fabrication parameters, e.g., the drawing ratio and the kind of dispersed chromophore mixture. These investigations complement conventional polarimetry analysis by adding nanometre-scale information on the spatial distribution of the chromophore molecules and their mutual alignment with the host polymer chains.
Ambrosio, A; Alderighi, M; Labardi, M; Pardi, Lucio; Fuso, Francesco; Allegrini, Maria; Nannizzi, S; Pucci, Andrea; Ruggeri, Giacomo
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/199135
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